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Second-Side Synchronous Rectifier


  • The LP3515 is a high performance second side synchronous rectifier for isolated flyback application in which a synchronous power MOSFET is integrated. The LP3515 is suitable for charger application which the high transfer efficiency is required. The LP3515 can avoid mis-operation caused by the demagnetization oscillation efficiently by using proprietary primary side turn on estimation and secondary side current discontinuous judgment technology. LP3515 also involves proprietary VCC supply technology which can ensure the IC can work normally in primary side CC and CV working mode. The LP3515 provides many protections which include VCC UVLO, VCC over voltage clamping , output short max on time shunt down and the DRV pin interference suppression. The LP3515 is available in SOP7

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